18921720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:269

約数の個数: 128

約数和(自身を含む): 61459200

約数和(自身を除く): 42537480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 43, 57, 60, 76, 86, 95, 114, 120, 129, 152, 172, 190, 193, 215, 228, 258, 285, 344, 380, 386, 430, 456, 516, 570, 579, 645, 760, 772, 817, 860, 965, 1032, 1140, 1158, 1290, 1544, 1634, 1720, 1930, 2280, 2316, 2451, 2580, 2895, 3268, 3667, 3860, 4085, 4632, 4902, 5160, 5790, 6536, 7334, 7720, 8170, 8299, 9804, 11001, 11580, 12255, 14668, 16340, 16598, 18335, 19608, 22002, 23160, 24510, 24897, 29336, 32680, 33196, 36670, 41495, 44004, 49020, 49794, 55005, 66392, 73340, 82990, 88008, 98040, 99588, 110010, 124485, 146680, 157681, 165980, 199176, 220020, 248970, 315362, 331960, 440040, 473043, 497940, 630724, 788405, 946086, 995880, 1261448, 1576810, 1892172, 2365215, 3153620, 3784344, 4730430, 6307240, 9460860, 18921720]

約数ペア:

[(1, 18921720), (2, 9460860), (3, 6307240), (4, 4730430), (5, 3784344), (6, 3153620), (8, 2365215), (10, 1892172), (12, 1576810), (15, 1261448), (19, 995880), (20, 946086), (24, 788405), (30, 630724), (38, 497940), (40, 473043), (43, 440040), (57, 331960), (60, 315362), (76, 248970), (86, 220020), (95, 199176), (114, 165980), (120, 157681), (129, 146680), (152, 124485), (172, 110010), (190, 99588), (193, 98040), (215, 88008), (228, 82990), (258, 73340), (285, 66392), (344, 55005), (380, 49794), (386, 49020), (430, 44004), (456, 41495), (516, 36670), (570, 33196), (579, 32680), (645, 29336), (760, 24897), (772, 24510), (817, 23160), (860, 22002), (965, 19608), (1032, 18335), (1140, 16598), (1158, 16340), (1290, 14668), (1544, 12255), (1634, 11580), (1720, 11001), (1930, 9804), (2280, 8299), (2316, 8170), (2451, 7720), (2580, 7334), (2895, 6536), (3268, 5790), (3667, 5160), (3860, 4902), (4085, 4632)]